Hubbard, D. W. (2010). How to measure anything: Finding the value of intangibles in business (2a. ed.). John Wiley and Sons, Inc.
Chicago-Zitierstil (17. Ausg.)Hubbard, Douglas W. How to Measure Anything: Finding the Value of Intangibles in Business. 2a. ed. Hoboken: John Wiley and Sons, Inc, 2010.
MLA-Zitierstil (9. Ausg.)Hubbard, Douglas W. How to Measure Anything: Finding the Value of Intangibles in Business. 2a. ed. John Wiley and Sons, Inc, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.